icom hm 36

144 MHz 25 Ohm Stacked Yagi - Two Versions of 5 elements stacked 25 Ohm Yagis with 1,80 m and 2,00 m Boom

144MHz Slim Jim antenna - 2 Meter band Slim Jim antenna using a 300 Ohm ribbon cable

Magnetic Long Wire UnUn 9:1 - An impedance transformer (9:1) to feed a high impedance long wire (~450 ohm), down to a 50 ohm unbalanced coaxial input.

Balun for HF wire dipoles - a neat 1:1 50 ohm balun for use on HF horizontal wire dipoles.

1:4 Current Balun - This project is intended to aid in tuning a balanced antenna or feedline that has a high impedance 100-600 ohms by N5ESE

The Sloping Vertical Dipole - The radiating part is the vertical half of the dipole. You get nearly radiation in all directions, the second half must not be in 180°. The table below show how we get an impedance for direct feeding of 50Ohm coax. by DK7ZB

75 ohm to 50 ohm Transformers - Transmission Line 75 ohm to 50 ohm Transformers

Ribbon Antenna - This antenna article is geared towards new Hams and antenna builders looking for a very inexpensive 6 band antenna that can be efficiently fed with 50 ohm coax without a tune

Slim Jim Antenna Using Twinlead - 2 Meter Slim Jim Antenna Using 300 Ohm Twinlead

Sloping Vee 470 - Article describes the design and simulation of a multiband Sloping Vee antenna for the HF band, using the software MMANA-GAL. Design with 470 ohms resistive loads. The antenna requires a 4:1 balun.

9N7AK - Station 9N7AK Amateur radio in Kathmandu, Nepal

Funkflohmarkt Austria - Ham radio classifieds in Austria

ABR Industries - 50 Ohm Coaxial Cables, Assemblies, and Connector supplies.

Czech Morse Keys - The key was made in the early 1950's for the Czech armed force. Czech Morse Keys For sale.

Ameritron AL-811H Tuning - Ameritron Al-811H Tuning for Power/Dissipation/Linearity, and More Generally 811A Tube Amps in Grounded Grid

IC-735 Review - W4TI Review of the ICOM 735

ICOM IC-746PRO Problems - The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

ICOM IC-746PRO Problems - The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

Icom PCR1000 Review - The Icom PCR1000 review by GW0KIG

HK360Radio Store - Ham Radio Strore in HongKong selling on ebay store

DStarChat USB - Software for ICOM D-Star Radios IC880H IC80AD

Mac Memory Manager - Amateur Radio Memory Manager Software for the Mac support many Yaesu Icom AOR and Kenwood radios

tk7 Software for the ICOM IC-Q7 - tk7 is open source software designed for the ICOM IC-Q7 walkie-talkie. Though tk7 is intended chiefly for Linux, MacOS X, and BSD users, it will work on Microsoft Windows too.

Filtering of the Icom IC-775 DSP - Replacing filters on ICOM IC 775

QLF Filter - Microprocessor based interface designed receives a signal from a Morse key, processes it, and re-transmits it to the radio. A microprocessor in the circuit is pre-programmed with a proprietary algorithm which makes a number of measurements and adjustments to the less percise human generated code.